Windshield wiper



July 2, 1929. H, SCHRODER 1,719,731

- WINDSHIELD WIPER Filed Feb. 28, 1927 Patented July 2, 1929.

Fica

'- wrNnsHIELD WIPER.

Application filed-February 28, 192;?. fseral'No. 171,391.

VMy invention relates to improvements in windshield'wipers, andit'consists in t-he comgbinations, constructions, and arrangements,hereinafter described and claimed. An object of my invention is to'provide a windshield wiper in which the rotor shaft is Vvhollowand-threaded for receiving a screw shaft wherebya rotationof said rotorin one direction will cause the `motor .to move'across 1o the front ofthewindshield and arreversalof Vthe rotorsmovement willreverse'thedirection of the inotor.- The motor carries a 'squeegee andthe squeegeekeeps Vthe windshield clean by the movement ofthe motor to and fro.-

1, A further object of my invention is-to provide a device ofy thetypedescribed in which novel 4.means isprovided for applying the requiredamount lof pressure upon the squeegee for causing it to effectuallyclean :the glass.

l Other objects and advantages will appear in the followingspecification, and the novel features ofthe invention will beparticularly pointed Aout in thefappended claims.

My invention is illustrated in the accompanying drawing, forming a partof this application, in which- Figure 1 is a vertical section thru thedevice showing it operatively applied to a windshield,

Figure 2 isa section along the line 2-2 of Figure 1, a portion of themotor being broken away, and

Figure 3 is a' wiring diagram. p

In carrying out my invention, I make use of a windshield 1, to the frameof which I attach a screw shaft 2. The shaft 2 is supported by brackets3 which prevent the shaftfrom rotating. l

Figure 1 shows a motor-4 having .a rotor 5 with'a hollow, threaded shaft6. The shaft 6 is mounted upon the screw shaft-2 and has its centralportion hollowed out at 7 for reducing the friction between the twovshafts. Rotation of the shaft 6 in one direction will cause the motor 4to move across' the windshield 1, while the rotation :of the shaft inthe-opposite direction will cause the rotor` to reverse its movement. 4

The motor 4 carries a squeegee supporting` arm 8 to which a squeegee ispivotally/secured at 9. The squeegee 10 consists of the usual y frame 11`and rubber 12. l

A rail 13 is provided at the top of the windshield for providing a trackwhich a roller 14 bears upon. The roller is carried by a projection 15of the motor and holds the motor in contact with the'glass.. The rail 13also `carries pins 16 used for actuatinga reverse switch' 17. V p

From lthe foregoing description of the vari-- ous parts of the device,theoperation thereof may be readily;y understood. Thespecd vof .themotor and the number of threads on the screw shaft 2 are determinedvforcausing the motor to make'approximately 20 strokes a minute across vthewindshield. rIhe source of currentIS (shown in Figure 3) may be thebattery of an automobile or a separate battery.A yThe motor 4 is of atype -which will rotate in a reverse direction when the current thru thestator coil 19 is reversed. When the motorreaches its limit of travel ineither direction on the shaft 2, the reverse switch lever 17 will be,thrownv for causing. the-motor to start moving in the oppositedirection.- This* v means mounted on the motor and riding upon thewindshield so as to exert the required pressure upon the wiper.

2. In a windshield cleaner', a screw shaft iixedly mounted on thewindshield; an electric motor adapted to reciprocate upon the screwshaft alongside the windshield, a windshield wiper carried by .saidmotor; and a roller mounted on the motor and riding on the windshield soas to exert the required pressure upon the wiper.

. 8. In a windshield cleaner, a screw shaft fixedly mounted on thewindshield, an electric motor adapted to reciprocate upon the vscrewshaft alongside the windshield, a windshield wiper carried by saidmotor; and a roller mounted on said motor opposite to said wiper andriding on the windshield so as to exert the required pressure upon thewindshield wiper. s

4. In a windshield cleaner, a screw shaft fixedly mounted on theWindshield, an electric motor adapted to reciprocate upon the screwshaft alongside the windshield; a'windshield wiper carried by saidmotor; a bracket on said motor extending oppositely to said windshieldwiper; and a roller mounted on in proper position for keeping thesqueegee said bracket and riding upon the windshield so as to exert therequired pressure on the wiper.

`5. In a windshield cleaner, a screw shaft iixedly mounted on thewindshield, an electric motor adapted to be moved alongside thewindshield by the rotation of its armature on Y the screw shaft; meanson the windshield for reversing the current control means of the motorat the opposite ends ol' its movement i on the screw shaft, so as toreverse the rotamotor at the opposite ends of its movement on the screwshaft, so as to reverse the rotation of the armature; a windshield Wipercarried by said motor, said wiper being vso disposed as to be in contactwith the windshield; and a roller mounted on the motor and riding on theWindshield, said roller being so disposed as to exert the requiredpressure upon the windshield wiper.

7 In a windshield cleaner, a screwshaft iixedly mounted on theWindshield, an electric motor adapted to be moved alongside thewindshield by the rotation of its armature on the screw shaft; means onthe windshield 'for reversing the current control means of the motor atthe opposite ends of its movement on the screw shaft, so as to reversethe rotation of the arn'iature.; a windshield wiper carried by saidmotor, said wiper being so disposed as to be in contact with the.windshield;

and a bracket on said motor extending oppov- Y sitely to said windshieldwiper; and a roller mounted therein in coacting relation with thewindshield for exerting the required pres-=l sure upon the windshieldwiper.

In a windshield cleaner', a screw shaft lixedly mounted on theWindshield, anelectric motor adapted to be moved alongside thewindshield by the rotation of its armatureonff' the screw shaft; meanson the windshield for reversing the current control means of the motorat the opposite ends of its movement on the screw shaft, so as toreverse the rotation of the armature.; a windshield wiper car-fw.

ried by said motor, said wiper being so' disposed as to be in contactwith the windshield, a rail mounted on the windshield, and a rollermounted on the motor opposite to said windshield wiper and riding' uponthe rail so Vas to exert the required shield wiper In testimony whereofI aix my signature HOWARD SGHRODER.

pressure on the wind-

